More than half of all US presidents have been lawyers. Many were born into wealth. But according to voters polled by Insider, those aren't terribly desirable traits for those running for president.

Voters said they best liked candidates who had served as governor, grew up middle class, and had served as vice president.

Insider surveyed 1,168 American adults on the prior qualifications and attributes that make them more likely to vote for a candidate for president.

Respondents were able to select as many options as they liked from a list of 41 attributes, including biographical details from "ivy league education" to "business owner." The poll then asked respondents to select from that same list of attributes the ones that make them less likely to vote for a candidate for president.

Taking the difference between how much each quality was liked and disliked, Insider was able to calculate the net favorability of each quality and assess every candidate's resumes based on the results.

Among those polled who said they plan to vote in their state's Democratic primary or caucus, the most favored attributes in a candidate were having released tax returns, experience in the Senate, having served as governor, and having served as vice president, and growing up middle class. The most disliked attributes were a rich upbringing and having worked as a banker, real estate executive, corporate lawyer, or landlord.

Here are all the Democratic candidates still running — save for Wayne Messam, who did not meet our threshold of polling above 1% or having held higher office, and Joe Sestak, who entered the race after our polling — ranked by how appealing their qualities are to voting Democrats.

SurveyMonkey Audience polls from a national sample balanced by census data of age and gender. Respondents are incentivized to complete surveys through charitable contributions. Generally speaking, digital polling tends to skew toward people with access to the internet. SurveyMonkey Audience doesn't try to weight its sample based on race or income. Total 1,168 respondents collected May 17 to May 18, 2019, a margin of error plus or minus 3.01 percentage points with a 95% confidence level.

12. South Bend Mayor Pete Buttigieg has a litany of accomplishments, from his US Navy service, to his Rhodes Scholarship. He also has attributes seen as negative by Democratic voters, such as his stint at top consulting firm McKinsey & Company.

10. Former Vice President Joe Biden has held the highest office of all the 2020 contenders — but past political decisions, such as voting for the war in Iraq and the controversial 1994 crime bill, could alienate modern voters.

9. Sen. Kamala Harris has a long resume as a litigator: generally a plus for voters. Democrats polled say they favor those who have been an attorney general or a district attorney, but not a prosecutor in general.

8. Of the traits polled by Insider, former HUD Secretary Julian Castro's background had nothing survey-takers perceived as negative. His middle-class background and cabinet experience would be seen as positives.

6. Like Castro, Rep. Tim Ryan's resume is free from what voters typically consider to be blemishes. His release of a decade of tax returns, along with his congressional experience, might give him more clout with voters.

5. Despite poor performance in polls, NYC Mayor Bill de Blasio's resume would be considered robust on its own by voting Democrats, who appreciate mayoral experience, activism, and having released tax returns.

poor performance in polls, NYC Mayor Bill de Blasio's resume would be considered robust on its own by voting Democrats, who appreciate mayoral experience, activism, and having released tax returns." data-title="" data-class=" postload" >
AP Photo/Charlie Neibergall

4. Gov. Steve Bullock has gubernatorial experience, as well as professorial experience teaching law at George Washington University. The Montana governor won office in a red state, which Democrats polled say they don't typically like.

2. Sen. Elizabeth Warren's resume has far more positives than negatives, including Senate experience and professorships at the University of Pennsylvania and Harvard. Warren's prior work as a consumer advocate help give her candidacy an extra edge.

1. Sen. Bernie Sanders is the only candidate who identifies as a democratic socialist, an attribute survey-takers said they value. Judged by the curriculum vitae voters consider ideal, Sanders would come out on top.

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